How do I view a history of alarms and events when configuration limits to 500 viewable? Easy way to save to file?
In 800xA the history of alarms is called event list.
Alarms are fresh information and no alarms will be retained at a system reboot - after startup, the 800xA system will "refresh" against OPC AE servers supporting refresh (most, but not all do).
After a complete reboot, alarms previously in "Inactive, Unacknowledged" state will be gone.
To come around this lack of "history" in alarm lists I suggest using event lists to view the history of alarms (all new alarms will register an event). Events are stored persistently on disk (default is 10.000 per event category).
Starting with version 5 (I think) all alarm lists have a default button which think is called "View Events" which quickly moves you from "current alarm state" into "past alarm state".
For performance reasons, alarm and event lists will show a maximum of 500 rows simultaneously. To see the next 500 and so on, press the "Next Page" (down arrow) button.